The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The record holder for the world’s largest peach.

This steam locomotive served as both an interesting static display and unique playground equipment since 1959.

This nine-story building can be played like an instrument.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

A mini-Stonehenge in the corner of the North Carolina state capitol grounds.

This hollow steel globe is the second-largest in the world.

The humble gravesite of the man who failed to cash in on his Pepsi-cola goldmine.

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

Take in some Air Force history—and ogle some beautiful planes—at this little-known park near Myrtle Beach’s seashore.

Burial site more than 300 years old.

A giant cement churn carries the legacy of American resilience, unity, and greed.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

Multiple monuments to a grizzled old mutt that survived the landscape of Butte's treacherous Berkeley Pit.

New fungal and bacterial species call this deadly lake home.

A Circus legend leaves an unexpected endowment.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This bridge is haunted by the ghost of a distraught mother.

A historic gristmill that still produces flour and grits the old-fashioned way.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.